Boat-propeller



O. H. OLIVE.

BOAT PROPELLER. APPLICATION FILED NOV-18,1919.

Patented Jan. 25, 1921.

2 SHEETSSHEET 1.

O. H. OLIVE. BOAT PROPELLER.

APPLICATION FILED NOV-18.1919.

Patented Jan. 25, 1921.

FATENT OFFIQJE,

OLIVER H. OLIVE, OF IDAHO FALLS, IDAHO.

BOAT-PROPELLER.

Application filed. November 18, 1919.

To all whom it may concern.

Be it known that I, OLIVER H. OLrvn, a citizen of the United States, residing 'at Idaho Falls, in the county of Bonneville and State of Idaho, have invented new and use ful Improvements in Boat-Propellers, of which the following is a specification.

This invention relates to improvements in propellers or paddle wheels for boats and has for an object the provision of a paddle wheel, which will operate either partially or wholly submerged in either shallow or deep water and will offer the greatest resistance to the water upon the working half of the stroke, but will offer a less resistance from the time the working stroke is finished until it is again resumed.

Another object of the invention is the provision of a paddle wheel or propeller in which the blades will not create a vacuum or drag in their passage through the water, their operation being such as not to form a trough for one another, or to lift the water and carry it upward, thereby increasing the amount of power necessary for the operation of the propeller.

Other objects and advantages of the invention will appear as the following de scription is read in connection with the accompanying drawings.

in the drawings:

Figure 1 is a plan view of a portion of a vessel, with the invention applied thereto.

Fig. 2 is a side elevation of the same.

Fig. 3 is a transverse vertical section taken through one side of the vessel on a line with the propeller shaft.

Fig. 4% is a similar view through the blade wiper.

Fig. 5 is a detail perspective view of the ring.

' Fig. 6 is a view similar to Fig. 2, showing independently movable paddles.

Referring to the drawings in detail, like characters of reference denote corresponding parts throughout the several views.

In the practical use of the invention, various forms may be employed, such as is illustrated in Figs. 1 to 5 of the drawings, wherein the reference character 10 denotes the paddle wheel shaft, which may be driven by any suitable source of power. The shaft extends transversely of the hull of the vessel and carries at each end a head 11, the said Specification of Letters Patent.

Patented Jan. 25, 1921.

Serial No. 338,992.

head operating within a ring 12, whichis suitably secured to the sides of the hull. A head 11 carries a plurality of radially extending arms 13, the said arms being mounted in bearings 14, carried by the head, so as to permit them to revolve upon the head. Each of the arms is provided with a reetangular bearing block 15, which contacts with and operates over the face of the ring 12, so as to hold the arms 13 against accidental rotation. Each pair of arms, which extends in opposite directions, is connected so as to rotate simultaneously, so that a rotation of one arm will likewise rotate the arm of which it forms a continuation. Located at the outer end of each of the arms 13, is a blade 16, the said blade being adapted to operate against the resistance of the water, as will be understood.

The paddle wheel revolves in a clockwise direction, and one of the novel features of the invention is the provision of means for presenting the flat surface of the blades to the action of the water upon the first half of the revolution of the shaft 10. This is accomplished through the medium of a trip, in the form of an arm 17, which projects from the periphery of the ring 12, and is located in the path' of an arm 18, carried by each of the blade arms 13, the said arms 18 extending transversely of the outer edge of the ring 12, until engaged by the trip 17, whereupon the arm 13, to which the trip 18 is secured, will. be given a quarter revolution, so as to present the flat face of the paddle blade to the action of the water. In order to'permit the arm 13 to revolve, the face of the ring is recessed, or cut away, as shown at 19. The position and shape of this recess is such as to cause the rectangular block 15 to engage the face of the ring 12, so that only a quarter revolution of the arm 13 is permitted. As the oppositely extending arm is connected to the arm which is rotated by the trip, this connected arm will he likewise rotated, and as its paddle is arranged at a right angle to the paddle of the trip engaged arm, the edge of the opposite paddle will be presented to the action of the water. The ring 12 is also cut away, as indicated at 20, to permit of a quarter turn of the oppositely extending arm. It will be seen, therefore, that in the downward or working stroke of the wheel, the paddles Q was es wi ll offer the greatest resistance to the action of the Water and on the upward stroke the least resistance.

Secured to the side of the vesselat the rear of the paddle Wheel, is a Wiper 21. This Wiper is adapted to clean or remove material collected by theblades 16. It consists of a pair of spaced plates 22, provided at their upper edges With inwardly'extending flexible flanges 28, which are adapted to contact with and Wipe against the face of the paddle blades 16.

In the form of the invention shown in Fig. 6, each 01": the arms 13 are independently rotatable, and to accomplish this each arm is separate or disconnected. The arms are rotated. at the beginning of the Working stroke 1n the same manner as the form of the invention previously described, but at the end or the working stroke and at the L J.

be inning of the Lip-stroke, the trip arms 18 engage an arm Q-Lwhich projects from the periphery of the r1ng 12 at a polnt diametrically opposite the trip 17, so that the blade will be rotated to present its edge to the action or the Water on the lip-stroke and permit of its passage through the Wiper 21.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having descibed the invention, What is claimed is: I

A propeller comprising a rotatable head, a plurality of radially extending arms located upon said head, blades carried by said arms, means located in the path of the arms whereby the latter will be rotated a quarter turn at eachhalf revolution of the head, a pair of spaced stationary plates arranged in the path of the blades for the passage of the latter and right angularly disposed flexible flanges carried by the plates for Wiping contact with the opposite faces of the blades.

In testimony whereof I afiix my signature.

OLIVER H. OLIVE. 

